About the American Horticultural Therapy Association

Advancing the practice of horticulture as therapy

Established in 1973, the American Horticultural Therapy Association (AHTA) is the only national US organization advocating for the development of the horticultural therapy profession and the practice of horticulture as therapy for human well-being. AHTA supports the professional development, education, and expertise of horticultural therapy practitioners. Individuals and organizations located across the US and beyond are members. We are a 501(c)(3) nonprofit membership-driven organization with the mission to promote and advance the profession of horticultural therapy as a therapeutic and rehabilitative modality

AHTA defines and encourages the pursuit of outstanding standards of practice, disseminates critical knowledge across diverse constituent audiences, and recognizes and promotes excellence in clinical, professional, educational, and research achievement.

Membership is comprised of individuals and organizations from throughout the U.S., Canada, Japan, and beyond. To learn more about AHTA, its initiatives, resources, and benefits, please explore this website and visit the Membership Benefits page.

AHTA Mission

AHTA is a non-profit membership-driven organization whose mission is to promote and advance the profession of Horticultural Therapy as a therapeutic intervention and rehabilitative modality through:

  • The dissemination of information relating to the principles and practices of horticultural therapy as a treatment modality.
  • The encouragement of professional growth of horticultural therapy practitioners.
  • The establishment of professional standards and a credentialing process for horticultural therapy practitioners.
  • The promotion of research related to the impact of horticultural therapy as a treatment modality.
  • The advocacy of horticultural therapy as a treatment modality to the public, the healthcare industry, the academic community, and the allied professions.
  • The promotion of horticultural therapy educational opportunities.

View the AHTA ByLaws
View the Strategic Plan

DEI Statement

The American Horticultural Therapy Association stands united against any form of racism, discrimination, and injustice. The plants we use in our profession are powerful symbols of community and diversity. The AHTA is committed to ensuring all of our diversity and inclusion goals align with our Code of Ethics. As we continue our mission to encourage the pursuit of outstanding standards of practice and disseminate critical knowledge across diverse constituent audiences, we strive to make the pursuit of horticultural therapy equitable, broadly accessible, and universally welcoming. We acknowledge the importance of examining what may stand in the way of becoming a more inclusive field, as diverse as the populations we proudly serve.

Why Is the American Horticultural Therapy Association Important?


  • Provides a national voice and presence for horticultural therapy
  • Works for validity and advancement of the profession
  • Creates awareness of horticultural therapy through National HT Week
  • Is the most effective source of information about horticultural therapy
  • Can monitor current trends in the profession and other allied professions
  • Can reach a wide variety of professions and professional contacts, including healthcare
  • Ability to fundraise on behalf of the Association and the profession
  • Maintains professional registration standards
  • Is positioned to pursue accreditation for HT professionals
  • Defines and promotes standards of practice and ethics
  • Has an international presence
  • Promotes horticultural therapy through strength in numbers


  • Registers practitioners at HTR level
  • Advertises career opportunities (jobs/internship positions)
  • Offers a user-friendly and expanded website that includes a members’ section
  • Offers awards that publicize and recognize programs and individuals
  • Communicated with members through the AHTA newsletter, Board Bulletin, and a
  • forum on LinkedIn


  • Creates standards for internships and intern supervisors
  • Accredits, supports, and monitors horticultural therapy certificate programs
  • Publishes the Journal of Therapeutic Horticulture
  • Offers an annual conference
  • Encourages networking among members and regional groups
  • Is the major contact for educational institutions nation-wide
  • Advises international programs in horticultural therapy